fix(sessions): stop pinning the w1-myapp placeholder as Claude's /resume title (#457)

* fix(sessions): stop pinning the w1-myapp placeholder as Claude's /resume title

Local claude spawns passed the tab name as `--name`. That flag is not only the
cross-session peer name: it is also the prompt-box label, the `/resume` picker
entry and the terminal title, and a pinned title stops Claude generating its own
(`customTitle ?? aiTitle`). So every conversation of a case was listed in
`/resume` as the same `w1-myapp`, and none of them got a generated title. On one
workspace, 34 of 34 conversations spawned with `--name` had no ai-title, while
every conversation spawned without it had one.

Only a name the user chose is pinned now: `Session.cliPinnedName` is the name
when `nameSource === 'manual'`, carried to the builders as a separate `cliName`
so the tab/mux name is untouched. Placeholder and auto names let Claude title
the conversation again.

A rename in Codeman also reaches `/resume`: the new name is appended to the
conversation's transcript as the `custom-title` row `/rename` writes (never
creating the file, never writing an empty title). For a pane spawned without
`--name` this holds immediately; a pane spawned with one re-appends its own
title each turn, so there the new name holds from the next spawn.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(sessions): skip no-op renames and docker sessions when syncing the /resume title

A same-name PUT (the Session Options field saves on blur and recomposes the
unchanged placeholder) no longer flips nameSource to manual or appends a
custom-title row, and docker sessions skip the host transcript scan since their
transcript lives in the container. The skill pages no longer use a w<N>- name
as the peer-name example, and the changeset notes the re-append caveat.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* docs: record that nameSource decides --name and renames reach /resume

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: codeman-local <codeman@local>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

skills/codeman/reference/endpoints.md

@@ -340,7 +340,7 @@ ESC=$(printf '\033')
 ### Starting a worker
 
 `POST /api/v1/quick-start` body (all optional):
-`{"caseName":"worker-1","mode":"claude","sessionName":"w9-worker","effort":"high"}`
+`{"caseName":"worker-1","mode":"claude","sessionName":"auth-worker","effort":"high"}`
 ,  `mode` ∈ `claude|shell|opencode|codex|gemini|antigravity|pi|grok|deepseek|omp`; response is
 `.data.{sessionId, caseName, casePath}`. Creates the case directory (a real directory
 on the user's disk) if missing, do not retry it in a loop, and remember the name.